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TPS7H5008-SEP: Use of TPS7H5008-SEP as a 2 phase voltage regulation module with smart power stage

Adrien BESSERVE
Prodigy 30 points
Part Number: TPS7H5008-SEP
Other Parts Discussed in Thread: TIDA-010958

Tool/software:

Hello,

To power the CORE voltage of a FPGA with a 80A 0.8V power supply, we are considering using TPS7H5008-SEP as a 2 phase voltage regulation module. 

We were inspired by the TI design TIDA-010958, except that we want to use smart power stage rather than GaN driver + MOSFETs.

It seems to me that TPS7H5008-SEP should be able to control 2 smart power stages with its 180° 2 phase management, the same way it is used in TIDA-010958 design to drive 2 GaN drivers. 

Could you please confirm if TPS7H5008-SEP is suitable to drive 2 smart power stages and alert us us if there are any special precautions ? For instance can IOUT current indication form SPS be linked with CS_ILIM pin of TPS7H5008-SEP for phase overcurrent management ?

Thank you for your support,

Best regards,

Adrien

  • 0
    TI__Mastermind 29075 points

    Hey Adrien,

    I'm unsure of what part you would use as a smart power stage.
    We have mostly evaluated the TPS7H500X controller family with the TPS7H60XX driver family.
    Specific issues tend to be part to part specific.

    Speaking about the controller in general:
    As long as the CS_ILIM pin sees the summation of the current from both phases as well as the VSENSE sees the output; the controller will operate as a peak current mode controller.
    If that will work with your smart power stage you have chosen, then I don't foresee any general issues you would run into.
    Specific issues are hard to evaluate without an actual full design.

    Thanks,
    Daniel